cmake_minimum_required(VERSION 3.10)

# set the project name and version
project(Tutorial VERSION 1.0)

# specify the C++ standard
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED True)

# TODO 7: Create a variable USE_MYMATH using option and set default to ON
option(USE_MYMATH "Use my math ?" OFF)
message(STATUS USE_MYMATH = ${USE_MYMATH})

# configure a header file to pass some of the CMake settings
# to the source code
configure_file(TutorialConfig.h.in TutorialConfig.h)

# TODO 2: Use add_subdirectory() to add MathFunctions to this project

if(USE_MYMATH)
    add_subdirectory(MathFunctions)
    list(APPEND EXTRA_LIBS MathFunctions)
    list(APPEND EXTRA_INCLUDES "${PROJECT_SOURCE_DIR}/MathFunctions")
endif()


# add the executable
add_executable(Tutorial tutorial.cxx)

# TODO 3: Use target_link_libraries to link the library to our executable
target_link_libraries(Tutorial PUBLIC ${EXTRA_LIBS})

# TODO 4: Add MathFunctions to Tutorial's target_include_directories()
# Hint: ${PROJECT_SOURCE_DIR} is a path to the project source. AKA This folder!


# add the binary tree to the search path for include files
# so that we will find TutorialConfig.h
target_include_directories(Tutorial PUBLIC
                           "${PROJECT_BINARY_DIR}"
                           ${EXTRA_INCLUDES}
                           )

message(STATUS MathFunctions -- ${PROJECT_SOURCE_DIR})